311857427 has 16 divisors (see below), whose sum is σ = 369168384. Its totient is φ = 257796000.

The previous prime is 311857417. The next prime is 311857451. The reversal of 311857427 is 724758113.

It is not a de Polignac number, because 311857427 - 2⁴ = 311857411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311857417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65177 + ... + 69797.

It is an arithmetic number, because the mean of its divisors is an integer number (23073024).

Almost surely, 2^311857427 is an apocalyptic number.

311857427 is a deficient number, since it is larger than the sum of its proper divisors (57310957).

311857427 is a wasteful number, since it uses less digits than its factorization.

311857427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970.

The product of its digits is 47040, while the sum is 38.

The square root of 311857427 is about 17659.4854681556. The cubic root of 311857427 is about 678.1389619245.

The spelling of 311857427 in words is "three hundred eleven million, eight hundred fifty-seven thousand, four hundred twenty-seven".